Staple forming and driving machine.



' Patented Aug.I, I899.

F. P. ROSBACK.

STAPLE FORMING AND DRIVING MACHINE. (Am alienation filed Mar. 17, 1899.) No Model.)

6 Sheets-Sheet m: Ncnms PETERs cn.. PKOTO-LITHO.. wnnmmm n. c,

No. 630,303. Patented Aug. I, I899. F. P. ROISBACK.

STAPLE FORMING AND DRIVING MACHINE.

(Application filed Mar. 17, 1899.-

6 Sheets-Sheet 2.

(No Model.)

No. 630,303. Patented Aug. l, I899. F. P. ROSBACK.

STAPLE FORMING AND DRIVING MACHINE.

(Application filed Mar. 17, 1899.) (No Model.) 6 Sheets-Sheet 3,

No. 630,303. Patented Au I, 1399.

r. P. ROSBADK.

STAPLE FORIMNG AND DRIVING MACHIN E.

(Application flied Mar. 17, 1899.)

6 Sheets-Shae! 4.

(No Model.)

Ya: NORRIS mini 00.. mom-uma, wumnsrou. o4 I:v

No. 630,303. Patented Aug. I, I899.

r. P. ROSBACK.

STAPLE FORMING AND DRIVING MACHINE.

(Application filed Mar. 17, 1899.) (No Model.) 6 Sheets-Sheet 5.

MW 3 w i uomus Prnzns cc, Pnmwmm WASHINGTON. c

No. 630,303. Patented Aug. 1399..

F., BOSBACK.

STAPLE FORMING AND DRiVlNG MACHINE.

(Application filed Mar. 17, 1899.) (No Iodel.) 6 Sheets-Sheet 6..

' UNITED STAT-E3 "FREDERICK P. ROSBAOK,

PATENT OFFICE.

OF CHICAGO, ILLINOIS.

- STAPLE FORMING AND DRlVlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 630,303, dated August 1, 1899.

Application filed March 17, 1899.

To all whom it may concern:

Be it known thatI, FREDERICK P. Ros- BACK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement. in Staple Forming and Driving Devices, of which the following is a specification.

My invention relates to improvements in devices for forming and driving staples, and more especially, though not necessarily, to devices of this class employed as parts of or attachments for machines for making boxblanks.

To clearly illustrate my present invention, it is shown in connection with a box-blank; making machine also of my invention and substantially of the construction illustrated in Letters Patent No. 614,348, dated Novem ber 15, 1898, and although certain of the details shown are provided to adapt my improvements to the said machine my invention in its broad sense is not to be limited to its connection with a box-blank-making machine, as it may be employed alone or in various other connections for making staples or for forming and driving them.

My object is to provide a device of simple and durable construction which will make and drive a staple in each operation without danger of a miss.

In the drawings, Figure 1 is an end eleva: tion of a machine for making box-blanks, showing for clearness of illustration only one of my improved staple forming and driving devices in place; Fig. 2, a plan section taken on line 2 2 of Fig. l and showing three of my improved staple forming and driving devices; Fig. 3, an enlarged and broken vertical section taken on line 3 3 of Fig. 1 and viewed in the direction of the-arrow; Fig. 3 a plan view of a clencher-head forming one of the details in Fig. 3; Fig. 4, an enlarged and broken perspective view showing the staple forming and driving device, its support, and the cross-heads for actuating it; Fig. 5, a broken plan section taken on line 5 5 of Fig. 4; Fig. 6, a view illustrating the first step in the operation of thedevice; Fig. 6, a detail showing the Wire-straightening block; Fig. 7, an enlarged broken section taken on line '7 7 of Fig. 6; Fig. 8, a view Serial Nb. 709,532. (No model.)

character as Fig. 13 and illustrating the final step in the operation of the device; Fig. 15, a perspective view of asliding wire-end guide and cutter, and Fig. 16 the cutting member of the sliding wire-end guide.

A isa boX-blank-making machine, and-B B my improved staple formingand driving devices.

G is the drive -shaft of the machine, D a swinging frame suspended from the shaft 0. and having two cross-bars D D and D D cross-heads actuated from eccentrics on the shaft 0 to reciprocate vertically in the frame D.

Each staple forming and, driving device B is formed with a block or back plate 25, from which extends a rigid arm 8 and a removable face-plate 1'. On the rear side of the blockt are upper and lower backward-extending lugs t 25 respectively, which fit over the bar D. In the said bar is a longitudinally-extending T-groove q, and in the back plate is a boltopening for a bolt q, havinga T-head to fit the groove q, whereby the device isfastened in proper position upon the bar D and secured rigidly in place. V

E is a staple-forming bar working in a vertical groove or recess i in the block it. In the rear side of the bar E is a longitudinally-extending T-groove p, and in the said groove is a staple discharging or driving bar F. The forming-bar E is provided at its upper end with a backward-extending shoulder E, extending into a recess 01 in the cross-head D and the driving-bar F is provided at its upper end with a backward-extending shoulder F, which extends into a recess n in the crosshead D G is a yielding anvil, consisting of a stem m, a cylindrical body portion m, and upper and lower jaws m m witha horizontal space or recess m between them. The anvil extends through a socket t in the block 25 and is pressed normally forward'by a spring m to extend at its jaws into the vertical groove The upper jaw m is cam-shaped, and the lower jaw m by preference, also. In the forward side face of the arni'fls, adjacent to the L on the bar L. In the end of the yoke is a tightening-screw M to engage the stud L Adjustably fastened in the head K is a finger K to engage the bell-crank lever H and extending through and adjustable in the head the forming-bar E and provided at its upper endwith a backward-extending shoulder H,

extending over the top of the cross-head*-D4 On-the shoulder H is a set-screw H inthe path of the upper surface of the cross-head D Aspring 11*, connected at opposite ends I respectively with the block i and bar H tends normally to draw the saidv bar in the downward direction. The lower end portion of the bar H is provided with a lip H (see Fig; 11,) whichwextends under a shoulder I1 bf fisa cutter-operating bar at the side of Q the block H the connection between the two being such that the cutter-block mayslide horizontally without releasing engagement with the lip H 9.

In the face of the blocker I plate H overlapping the member H and having a recessed cutting edge H When the member I:[ is in its normal relation to the member H, there is anopeningbetween the cutting edges H H? for thepassage of a staple-wire Y. I

an d a pivotal spring-pawl-Z.

the arm 3. The block K carries a wire-guide K and a spring-pawl K K is a wire-feeding block which slides upon L is a movable bar mountedltoward opposite ends on links L L respectively, which of the wiriee'guidel".

bymeans of the set-screw f.

the anvil G. I the boX-blank-making machine the bar L and K is a set-screw K to engage the armll all as hereinafter described.

On the end of the arm sis a projecting lug f, carrying a vertical set-screw f, and pivoted upon the said end at f is a swinging wire-straightening block f just in advance The block f is adjusted Initially the parts are in the position shown in Figs. 3, 4', and 6, and the wire Y is placed in position by passing it through an eye (1 on the bar L, thence under the straightening block f through the guide Z under the pawl Zflfithence through the guide K under the pawl K and thence through the graduallyreduc ing groove H in the cutter-block member H The opening atH II is'close to and in line with the space M between the jaws m m of In the rotation of the shafts of connecting-rodM are moved in the direction toward the right in Fig. 3 to feed the staplewire across the anvil G and causing the finger K to slide from the top of the bell-crank lever H and'also causing the set-screw K to engage the arm 11 and move the cutter-block H to the left away from the anvil G, all as shown in Fig. 8. As soon as the cutter-block arrives at this positionthe cross-head D engages the set-screw H? on the cutter-operating bar and by lifting the latter draws the sliding member Hm the cutter-block in the upward direction, causing the wire to be sheared 0E by the cutting edges H H At this pointthe cross-head D reaches the limit of its rise, while the cross-head D is descend- I g i v f ing. The cross-head n at the upper side of its On the arm '3 are a stationarywire-guide Z.

' ing-bar E and presses the latter downward past the jaws pf the anvil. The T-groove'p of the forming-barcauses the latter toclear the anvil, while the lower end of the bar moves from the position shown in Figs. 8, 9, and 10 to engage the staple-wire at opposite are pivoted to a bar A", torming part ot the main frame of the machine. The link His 1 one arm of a bell-crank lever, the other arm" L of which is provided with alongitudinallyextending slot 2'.

crank lever is connected by meaus of a rod iwith an eccentric i on one of the shafts of j the machine, whereby in the turning. of the shaft the bar L is reciprocated laterally in the horizontal plane.

The distance of inovel is a post K carrying a head K g Y M is a connecting-rod provided at one end with a head M, which pivotally engages the post'K and at its opposite end with a slotted head or yoke M which receives a screw-stud sides of-the anv l and form the staple Y, as shown, for example, in Fig. 13. As will be seen in that figure, the staple is formed over the jaw m of the anvil, the legs of @the staple being in the lateral slots of the T-groove p of the forming-bar. jl While a staple is being formed as described the cross-head D commences its downward movement. The block K continues its movement toward the right to feed the staple-wire toward the anvil, and

the cross-head D presses down the driving-' bar F. The lower end of the drivingbar F engages the cam-surface of the jaw m of the anvil and presses the latter out of its path against theresistance'of the spring we and engages the top of the staple and drives it downward out of the forming-bar, as illustrated in Figsli. The cross-head D rises while the staple is being discharged, and at the completion of the discharge the lower edge of its groove a engages the shoulder on the forming-bar E and raises the latter upward past theanvil. Thecross-headD also commences to rise at about the same time that the forming-bar commences its upward movement, so that both the driving-bar and forming-bar are raised above the anvil and the latter is released and springs forward just before the end of the wire for the next staple reaches the recess t of the block 25. The engagement of the fingerK with the arm of the bell-crank lever H moves the block 11 very quickly along the staple-wire to the end portion of the latter and close to the anvil, whereby the cutter-block operates to guide the end of the wire through the anvil-opening m. The cutter-block remains in this position until in the final movement of the block K the screw K contacts with the arm I1 and moves the cutter-block quickly along the wire to its cutting position, at which position it remains momentarily stationary during the change in direction of movement of the bar L and attendant parts, and at this moment the crosshead D? reaches the limit of its rise to raise the cutter-bar and starts to descend to release the cutter-bar. In the backward movement of the block K the wire is held against retraction by the pawl Z, the pawl K sliding freely over the wire, while in the movement of the block K in the direction to the right the pawl K grips the wire to feed it, the wire moving readily under the pawl Z. The length of one staple-leg may be changed by changing the adjustment of the connecting-rod '1." in the slot 2' to increaseor diminish the throw of the bar L, and the position of the cutterblock H at the time the cutting of the wire is elfected may be changed byadjusting the setscrew K Thus the end of the set-screw may be caused to engage the arm II and move the cutter-block to a position where the length of the staple-legs will be the same when the cutting is efiected.

' In the operation of the box-blank-making machine a blank Z and strengthening-wires Z are fed across the lower ends of the staple forming and driving devices, the staples being driven into the blank to straddle the strengthening-wires and preferably clenched. Adjustably fastened upon the bar D beneath each staple forming and'driving device is a block N, to which is secured a post N, provided at its top with a clencher-plate N of the form shown in Figs. 3 and 3. The post N may be raised and lowered to position it upon the block N by means of an adjusting-screw N As the staples are driven their ends strike grooves c in the clencher-plate and are upset to clench the staples. Fastened against the face-plate r is a bar I), provided at its lower end with a presser-roller b, and on the upper end of the bar N is a presser-roller N After a staple has been driven and the blank material is fed along the staple passes between the rollers b N and the clenched ends are pressed into the under surface of the blank.

My improved staple forming and driving device, while particularly desirable for use in connection with a box-blan k-making machine such as described, is a complete device in itself and may be employed alone or in any other connection where operating mechanism is suitably adapted.

In the construction described the cutterblock II, it will be understood, performs two functionsnamely, those of a wire-end guide for directingthe wire to the anvil and of a Wire-cutter. It moves to its wire-end-guidin g position to insure the proper positioning of the wire at the anvil and then moves out of the way, so as not to obstruct the wire in the bending operation. While the wire-end guide and cutter in the present construction are one piece of mechanism, I do not wish to be limited thereto, as I believe it to be novel to provide a movable wire-end guide operating as set forth.

While I prefer to construct my improvements as shown and described, they may be variously modified in the matter of details of construction without departing from the spirit of my invention as defined by the claims.

' What I claim as new, and desire to secure by Letters Patent, is-

1. In a staple-forming device, the combination with the staple-forming anvil and the wire feeder, cutter, staple forming and discharging mechanisms and their actuating means, of a wire-end guide movable to one position to guide the wire to the anvil and movable from said position to be out of the way in the staple-bending operation, substantially as described.

2. In a staple-forming device, the combination with the staple-forming anvil and the wire-feeder, staple forming and discharging mechanisms and their actuating means, of a sliding wire-end guide and cutter movable toward the anvil to guide the wire, and movable away from the anvil to its cutting position, and means for operating the cutter, substantially as described.

3. In a staple-forming device, the combination with the staple-forming anvil, cutter, staple forming and discharging mechanisms and their actuating means, of areciprocating wirefeederand a wire-end guide actuated by movement of the wire-feeder to move to one position to guide the wire to the anvil and to move from said position to be out of the way in the staple-bending operation, substantially as described.

at. In a staple-forming device, the combination with the staple-forming anvil, staple forming and discharging mechanisms and their actuating means, of a reciprocating wirefeeder, a wire-end guide and cutter actuated by movement of the wire-feeder to move toward the anvil to guide the wire and to move away from the anvil to its cutting position,

and means for operating the cutter, substan tially as described.

5. In a staple-forming device, the combina- 4 tion with the staple-forming anvil and the staple forming and discharging mechanisms and their actuating means, of a reciprocating wirefeeder, a sliding wire-end guide and cutter between the wire-feeder and anvil actuated by movement of the wire-feeder to move toward the anvil to guide the wire and to move away from the anvil to its cutting position, and means for operating the cutter, substantially as described.

6'. In a staple-forming device, the combination with the staple-formin g anvil and the staple forming and discharging mechanisms and their actuating means, ofareciprocating wirea feeder, a sliding wire-end guide and cutter between the wire-feeder and. anvil, an operpath of the said wire-feeder and actuated thereby to move toward the anvil to guide the wire and then move away from the anvil to its cutting position, and means for operating the cutter, substantially as described.

7. The combination with the cross-heads l and their operating means, of a staple-forming and driving device havinga staple-forming anvil,,staple forming anddriving niecli anisms operatively connected with said crossheads, a reciprocating wire-feeder, a sliding wire-end guide and cutter thereon operatively connected with one said cross-head, the wireend guide being actuated by the wire-feeder to move toward the anvil to guide the wire and-to then move away from the anvil to the cutting position, substantially as described.

8. The combination with the main frame and drive-shaft, of. the operating-barL operatively geared to the drive-shaft to be oscillated thereby, and a plurality of staple forming and driving devices provided with wirefe'eders connected with said bar to be actuated thereby in unison, substantially as described.

9. The combination with the main frame and drive-shaft, of the operating-bar L operatively geared to the drive-shaft to be oscilating-lever for said guide and cutter in the lated thereby and adjustable to vary its throw,

5 and a plurality of staple forming and driving devices provided with wire-feeders connected with said bar to be actuated thereby in uni- I son, substantially as described.

FREDERICK P. ROSBAOK. In presence of- M. S. MACKENZIE, R. T. SPENCER. 

